.inner-wrapper.help_document{
   .title{
       text-align: center;
       font-size: 20px;
   }
  .datetime{
    text-align: center;
    margin-top: 20px;
  }
  .content{
    margin-top: 20px;
     text-align: left;
    text-indent: 2em;
  }
}
.select_category option::after{
  content: '+';
  font-size: 20px;
  line-height: 0.8;
  float: right;
  margin-right: 5px;
  font-weight: normal;
}